Exponential function
Mathematical function, denoted exp(x) or e^x
Exponential function
In mathematics, the exponential function is the unique real function which maps zero to one and has a derivative everywhere equal to its value. It is denoted e x {\displaystyle e^{x}} or exp x {\displaystyle \exp x} ; the latter is preferred when the argument x {\displaystyle x} is a complicated expression. It is called exponential because its argument can be seen as an exponent to which a constant number e ≈ 2.718, the base, is raised. There are several other definitions of the exponential function, which are all equivalent although being of very different nature. The exponential function converts sums to products: exp ( x + y ) = exp x ⋅ exp ...
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